THE DISCOVERY OF TWO DEAD BODIES LEADS NCIS INTO THE WILD WORLD OF MODERN-DAY TREASURE HUNTING, AND GIBBS AND FORNELL CONTINUE THEIR SEARCH FOR THE OPIOID KINGPIN, ON “NCIS,” TUESDAY, DEC. 8

“Blood and Treasure” – The discovery of two dead bodies in a forest leads the NCIS team into the wild world of modern-day treasure hunting. Also, Gibbs and Fornell get deeper into their search for the opioid kingpin, on NCIS, Tuesday, Dec. 8 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

FLASHBACKS REVEAL THE MURDER CASE THAT FIRST INTRODUCED GIBBS TO NCIS AND HIS INTRODUCTION TO A NEW-TO-THE-U.S. DUCKY, ON THE 400TH EPISODE OF “NCIS,” TUESDAY, NOV. 24

Sean Harmon, Mark Harmon’s Son, Guest Stars as Young Gibbs;

Adam Campbell Guest Stars as Young Ducky

“Everything Starts Somewhere” – Flashbacks reveal the murder case that first introduced young Gibbs (Sean Harmon) to NCIS and his introduction to young, new-to-America Ducky (Adam Campbell), on the 400^th episode of NCIS, Tuesday, Nov. 24 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

GIBBS AND FORNELL ATTEMPT TO TRACK DOWN THE LEADER OF A DRUG RING WHO SUPPLIED DRUGS TO FORNELL’S DAUGHTER, AND THE TEAM DEALS WITH THE CASE OF A MISSING CADAVER FROM THE NCIS AUTOPSY ROOM, ON THE 18TH SEASON PREMIERE OF “NCIS,” TUESDAY, NOV. 17

Joe Spano Guest Stars as Tobias Fornell

“Sturgeon Season” – Gibbs and Fornell (Joe Spano) attempt to track down the leader of a drug ring who supplied drugs to Fornell’s daughter. Also, the team deals with the case of a missing cadaver from the NCIS autopsy room, on the 18^th season premiere of NCIS, Tuesday, Nov. 17 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

THE NCIS TEAM INVESTIGATES A PETTY OFFICER’S MURDER THAT WAS LIVE-STREAMED ON A POPULAR GAMING APP, ON “NCIS,” TUESDAY, NOV. 26

“IRL” – The NCIS team investigates a petty officer’s murder that was live-streamed on a popular gaming app. Also, Gibbs watches his 11-year-old neighbor, Phineas (Jack Fisher), when his mom must leave on a last-minute trip, on NCIS, Tuesday, Nov. 26 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

THE NCIS TEAM INVESTIGATES THE MURDER OF A MUSICIAN IN THE NAVY’S MOST ELITE BAND THAT PERFORMS AT DIPLOMATIC EVENTS AROUND THE WORLD, ON “NCIS,” TUESDAY, NOV. 19

“Musical Chairs” – The NCIS team investigates the murder of a musician in the Navy’s most elite band that performs at diplomatic events around the world, on NCIS, Tuesday, Nov. 19 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

WHILE INVESTIGATING A MARINE’S MURDER, THE NCIS TEAM UNCOVERS A LABYRINTH OF LIVE-STREAMING SPY CAMERAS HIDDEN IN THE ROOMS OF A VIRGINIA MOTEL, ON “NCIS,” TUESDAY, NOV. 12

“No Vacancy” – While investigating a Marine’s murder, the NCIS team uncovers a labyrinth of live-streaming spy cameras hidden in the rooms of a Virginia motel, on NCIS, Tuesday, Nov. 12 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

AFTER A PETTY OFFICER’S SON IS FOUND MURDERED AT HIS “WELCOME HOME FROM PRISON” PARTY, EVIDENCE SUGGESTS KASIE’S LIFELONG BEST FRIEND IS THE SUSPECT, ON “NCIS,” TUESDAY, NOV. 5

Devale Ellis Guest Stars Include Dante Brown, Kasie’s Lifelong Best Friend

“Institutionalized” – After a petty officer’s son is found murdered at his “welcome home from prison” party, evidence suggests Kasie’s lifelong best friend, Dante Brown (Devale Ellis), is the suspect, on NCIS, Tuesday, Nov. 5 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

NCIS INVESTIGATES A MARINE CORPORAL AFTER EVIDENCE SUGGESTS SHE MURDERED HER NEIGHBOR WHILE BEING TREATED FOR INSOMNIA BY A HYPNOTHERAPIST, ON “NCIS,” TUESDAY, OCT. 22

Guest Stars Include Laura San Giacomo as Doctor Grace Confalone and Camryn Grimes as Marine Corporal Laney Alimonte

“Wide Awake” – NCIS investigates Marine Corporal Laney Alimonte (Camryn Grimes) after evidence suggests she murdered her neighbor while being treated for insomnia by a hypnotherapist. Also, Gibbs befriends his new neighbors after the 9-year-old’s baseball crashes through his window, on NCIS, Tuesday, Oct. 22 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Laura San Giacomo guest stars as Doctor Grace Confalone.

THE NCIS TEAM LINKS A BIZARRE CRIME SCENE AT ARLINGTON NATIONAL CEMETERY TO A STRING OF ATTACKS ON HOMELESS VETERANS, ON “NCIS,” TUESDAY, OCT. 15

“Someone Else’s Shoes” – The NCIS team links a bizarre crime scene at Arlington National Cemetery to a string of attacks on homeless veterans. Also, Vance orders McGee, Bishop and Torres to complete hours of evidence garage cleanup duty for withholding information, on NCIS, Tuesday, Oct. 15 (8:00-9:00 PM, ET/PT) on the CBS Television Network.